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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | 21x 21x 21x 21x | const Streamz = require('streamz');
function insert(table, options) {
options = options || {};
let cols = (async () => {
var metadata = await table.getMetadata();
cols = metadata[0].schema.fields.map(d => d.name);
return cols;
})();
return Streamz(options.concurrency, async d => {
await cols;
const data = [].concat(d).map(d => {
return cols.reduce( (p,col) => {
if (d[col] !== undefined) p[col] = d[col];
return p;
},{});
});
await table.insert(data);
});
}
module.exports = {insert}; |